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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic - Engine Control (1 Of 5) >> DTC P0091-00: Fuel Pressure Regulator Control Circuit Low Input >> Related PIDs
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Related PIDs

PID REFERENCE

Item (definition) Unit/Condition Definition Condition/Specification (Reference)
FUEL_PRES KPa {MPA}, mBar {BAR}, psi, in H20 Fuel pressure input from fuel pressure sensor
  • Displays fuel pressure
V Fuel pressure sensor voltage Idle (ECT 80°C {176°F})
  • Fuel pressure is 3 MPa {31 kgf/cm 2 , 435 psi}: Approx. 0.9 V
LOAD % Ratio of actual amount of intake air to the maximum air charging amount (mass volume) of cylinder
  • Idle (after warm up): Approx. 22.35%
  • Racing (engine speed is 2, 000 RPM): Approx. 17.25%
  • Racing (engine speed is 4, 000 RPM): Approx. 19.21%
RPM RPM Engine speed
  • Displays engine speed


PID REFERENCE

Item Definition Unit Condition/Specification
FUEL_PRES Fuel pressure input from fuel pressure sensor KPa {MPA}, mBar {BAR}, psi, in H20
  • Displays fuel pressure
Fuel pressure sensor voltage V Idle (ECT 80°C {176°F})
  • Fuel pressure is 10 MPa {102 kgf/cm2 , 1450 psi}: Approx. 1.4 V
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